Potential sale comes as investors and brokers come under pressure to cut trading costs ahead of new regulatory requirements

HgCapital, a Europe-based buyout firm, is eyeing the possible sale of Ullink in a deal that could value the provider of electronic-trading software at about €700 million ($832.7 million), according to people familiar with the matter.

The potential sale comes as investors and brokers come under pressure to cut trading costs and meet new regulatory requirements to boost transparency and mitigate risk taking.